It should come as little surprise that Mayor Bloomberg’s much-vaunted good-behavior dole has turned out to be mostly ineffective.

Which is pretty much what we expected when he started handing “conditional cash transfers” to dysfunctional people to encourage good behavior. Like going to the dentist, showing up to school, or holding a job for 30 hours a week.

On the whole — and especially on the education front — cash recipients did no better than those in a control group who were expected to behave for free.

So the mayor has halted the two-year-old program, which saw about $12,000 disbursed to the average family.

Happily, the program was privately funded — though Bloomberg had hoped to saddle taxpayers with it had the results been more positive.

The taxpayers dodged a bullet: On top of the nearly $14 million in good-behavior dough, the program spent $10.2 million in administrative costs and $9.6 million for research — that is, 40 percent more in overhead than in bribes.

And the gravy train rolls on: Researchers will try to determine whether the good behavior continues once the cash stops flowing. Um, we would guess not.

Kudos to Mayor Mike, though, for pulling the plug on a scheme that isn’t working. How often does that happen?